Add 81/15 and 90/24
1st number: 5 6/15, 2nd number: 3 18/24
81/15 + 90/24 is 183/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
81/15 = 81 × 8/15 × 8 = 648/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Add the two like fractions:
648/120 + 450/120 = 648 + 450/120 = 1098/120 - 1098/120 simplified gives 183/20
- So, 81/15 + 90/24 = 183/20
In mixed form: 93/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+90/24 81/15+90/48 81/45+90/24 81/15+90/72 81/75+90/24